<template>
	<view>
		<my-search @click="gotoSearch"></my-search>
		<view class="scroll-view-container">
			<scroll-view class="left-scroll-view" scroll-y :style="{height: wh + 'px'}">
				<block v-for="(item,i) in cateList" :key="i">
					<view :class="['left-scroll-view-item',i === active ? 'active' : '']" @click="activeChanged(i)">
						{{item.cat_name}}
					</view>
				</block>
			</scroll-view>
			<scroll-view class="right-scroll-view" scroll-y :style="{height: wh + 'px'}" :scroll-top="scrollTop">
				<view class="cate-lv2" v-for="(item2,i2) in cateLevel2" :key="i2">
					<view class="cate-lv2-title">
						/ {{item2.cat_name}} /
					</view>
					<view class="cate-lv3-list">
						<view class="cate-lv3-item" v-for="(item3,i3) in item2.children" :key="i3" @click="gotoGoodsList(item3)">
							<image :src="item3.cat_icon.replace('ugo-dev','hmugo-web')" mode="widthFix"></image>
							<text>{{item3.cat_name}}</text>
						</view>
					</view>
				</view>
			</scroll-view>
		</view>
	</view>
</template>

<script>
	import badgeMix from '@/mixins/tabbar-badge.js'
	export default {
		mixins:[badgeMix],
		data() {
			return {
				wh:0,
				cateList:[],
				active:0,
				cateLevel2:[],
				scrollTop:0
			};
		},
		onLoad() {
			this.getCateList()
			
			const sysInfo = uni.getSystemInfoSync()
			this.wh = sysInfo.windowHeight
		},
		methods:{
			async getCateList() {
				const { data:res } = await uni.$http.get('/api/public/v1/categories')
				if(res.meta.status !== 200)return uni.$showMsg()
				this.cateList = res.message
				this.cateLevel2 = res.message[0].children
			},
			activeChanged(i) {
				this.active = i
				this.cateLevel2 = this.cateList[i].children
				this.scrollTop = this.scrollTop === 0 ? 1 : 0
			},
			gotoGoodsList(item3) {
				uni.navigateTo({
					url:'/subpkg/goods_list/goods_list?cid=' + item3.cat_id
				})
			},
			gotoSearch() {
				uni.navigateTo({
					url:'/subpkg/search/search'
				})
			}
		}
	}
</script>

<style lang="scss">
.scroll-view-container {
	display: flex;
	
	.left-scroll-view {
		width: 120px;
		
		.left-scroll-view-item {
			line-height: 60px;
			background-color: #f7f7f7;
			text-align: center;
			font-size: 12px;
			
			&.active {
				background-color: #ffffff;
				position: relative;
				
				&::before {
					content: '';
					display: block;
					width: 3px;
					height: 30px;
					background-color: #c00000;
					position: absolute;
					left: 0;
					top: 50%;
					transform: translateY(-50%);
				}
			}
		}
	}
	.cate-lv2-title {
		font-size: 12px;
		font-weight: bold;
		text-align: center;
		padding: 15px 0;
	}
	.cate-lv3-list {
		display: flex;
		flex-wrap: wrap;
		
		.cate-lv3-item {
			width: 33.33%;
			margin-bottom: 10px;
			display: flex;
			flex-direction: column;
			align-items: center;
			
			image {
				width: 60px;
				height: 60px;
			}
			
			text {
				font-size: 12px
			}
		}
	}
}
</style>
